Evaluation of 3D gold nanodendrite layers obtained by templated galvanic displacement reactions for SERS sensing and heterogeneous catalysis

Abstract

Dense layers of overlapping three-dimensional gold nanodendrites obtained by lithographically guided gold nanodendrite growth were evaluated for SERS-based preconcentration sensing and heterogeneous catalysis.

Mechanistic Insight into the ZnO‐Assisted Growth of Sn6O4(OH)4 Three‐Dimensional Dendritic Hexapods

“…The ability to fabricate the dendritic nano/microstructures with controlled morphology and desired properties is the prerequisite to meet the need of their growing technological applications. Several synthetic techniques have been developed for the fabrication of dendritic nano/microstructures, including electrochemical depositions, [6] galvanic replacement reactions, [7] self-assembly, [8] hydrothermal approaches, [9] etc. However, most of the reported dendritic nano/microstructures consist of densely crowded branches with scarcely ever controlled two-dimensional (2D) morphology.…”

Tunable Fractal Nanostructures for Surface-Enhanced Raman Scattering via Templated Electrodeposition of Silver on Low-Energy Surfaces

“…Fabrication of metallic (e.g., Ag or Au) nanostructures is currently an area of great interest, as such structures can be used for sensing and catalytic applications. − As a sensing mechanism, surface-enhanced Raman scattering (SERS) offers the benefits of water compatibility, nondestructive label-free testing, and low detection limits for analytes . By enhancing the “molecular fingerprint” of analytes adsorbed onto the SERS substrates by several magnitudes, single-molecule detection and identification becomes possible .…”

Enhanced thermal effect of plasmonic nanostructures confined in discoidal porous silicon particles

“…The thermal effect is very important in the plasmonic matrix. The ability to effectively increase the temperature of the nanostructure could be applied in many bio-related surrounding processes, including selective identication and killing of cancer cells, 1 photothermal nanotherapeutics, 2,3 local control over phase transitions, 4 nanouidics and chemical separation, 5 heterogeneous catalysis, 6,7 drug delivery, [8][9][10][11][12] photothermal melting of DNA, 13 and surface-assisted laser desorption/ ionization time-of-ight mass spectrometry. [14][15][16][17] These applications of heated nanoparticles rely on a simple mechanism.…”